METHOD OF TRANSMITTING AND RECEIVING ACK/NACK SIGNAL AND APPARATUS THEREOF

摘要

Disclosed is a method for transmitting an ACK/NACK signal for an HARQ (Hybrid Automatic Repeat reQuest) in a CA (Carrier Aggregation) system, the method including obtaining at least one transmission resource among first and second transmission resources; configuring a first table showing a relationship in which a combination of at least one of the first and second transmission resources and modulation symbols is mapped to an ACK/NACK signal, and transmitting modulation symbols corresponding to a transmission target ACK/NACK signal in the first table by using transmission resource corresponding to the transmission target ACK/NACK signal in the first table.

主权项

1. A method for transmitting an acknowledgement/not-acknowledgement (ACK/NACK) by a user equipment (UE), the method comprising:
configuring a first and second ACK/NACK resource sets based on a Radio Resource Control (RRC) signal; receiving, from a base station (BS), an ACK/NACK resource indicator configured to indicate at least two ACK/NACK resources; mapping, based on a channel selection, an ACK/NACK associated with a downlink data transmission onto a combination of at least one of the at least two ACK/NACK resources and a modulation symbol; and transmitting, to the BS, the ACK/NACK by using the combination, wherein if a value of the ACK/NACK resource indicator is ‘00’, the at least two ACK/NACK resources correspond to a first ACK/NACK resource value in the first ACK/NACK resource set and a first ACK/NACK resource value in the second ACK/NACK resource set, respectively; is if the value of the ACK/NACK resource indicator is ‘01’, the at least two ACK/NACK resources correspond to a second ACK/NACK resource value in the first ACK/NACK resource set and a second ACK/NACK resource value in the second ACK/NACK resource set, respectively; if the value of the ACK/NACK resource indicator is ‘10’, the at least two ACK/NACK resources correspond to a third ACK/NACK resource value in the first ACK/NACK resource set and a third ACK/NACK resource value in the second ACK/NACK resource set, respectively; and if the value of the ACK/NACK resource indicator is ‘11’, the at least two ACK/NACK resources correspond to a fourth ACK/NACK resource value in the first ACK/NACK resource set and a fourth ACK/NACK resource value in the second ACK/NACK resource set, respectively.